https://doi.org/10.1140/epjc/s10052-015-3718-9
Regular Article - Theoretical Physics
Supersymmetric dark matter after LHC run 1
1
DESY, Notkestraße 85, 22607, Hamburg, Germany
2
High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ, UK
3
Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL, 60510, USA
4
Physics Department, University of Illinois at Chicago, Chicago, IL, 60607-7059, USA
5
Physics Department, CERN, 1211, Geneva 23, Switzerland
6
Antwerp University, 2610, Wilrijk, Belgium
7
Theory Group, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025-7090, USA
8
ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, University of Melbourne, Parkville, 3010, Australia
9
Theoretical Particle Physics and Cosmology Group, Department of Physics, King’s College London, London, WC2R 2LS, UK
10
H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL, UK
11
Instituto de Física de Cantabria (CSIC-UC), 39005, Santander, Spain
12
Physik-Institut, Universität Zürich, 8057, Zürich, Switzerland
13
Universidade de Santiago de Compostela, 15706, Santiago de Compostela, Spain
14
William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, 55455, USA
* e-mail: olive@physics.umn.edu
Received:
24
August
2015
Accepted:
5
October
2015
Published online:
23
October
2015
Different mechanisms operate in various regions of the MSSM parameter space to bring the relic density of the lightest neutralino, , assumed here to be the lightest SUSY particle (LSP) and thus the dark matter (DM) particle, into the range allowed by astrophysics and cosmology. These mechanisms include coannihilation with some nearly degenerate next-to-lightest supersymmetric particle such as the lighter stau
, stop
or chargino
, resonant annihilation via direct-channel heavy Higgs bosons H / A, the light Higgs boson h or the Z boson, and enhanced annihilation via a larger Higgsino component of the LSP in the focus-point region. These mechanisms typically select lower-dimensional subspaces in MSSM scenarios such as the CMSSM, NUHM1, NUHM2, and pMSSM10. We analyze how future LHC and direct DM searches can complement each other in the exploration of the different DM mechanisms within these scenarios. We find that the
coannihilation regions of the CMSSM, NUHM1, NUHM2 can largely be explored at the LHC via searches for
events and long-lived charged particles, whereas their H / A funnel, focus-point and
coannihilation regions can largely be explored by the LZ and Darwin DM direct detection experiments. We find that the dominant DM mechanism in our pMSSM10 analysis is
coannihilation: parts of its parameter space can be explored by the LHC, and a larger portion by future direct DM searches.
© SIF and Springer-Verlag Berlin Heidelberg, 2015